apps/ccam/imageaccess.h

Go to the documentation of this file.

// imageaccess.h
// * modified for model 313

#ifndef MAP_OPTIONS                     
#ifndef MAP_FILE                        
  #define MAP_OPTIONS MAP_PRIVATE               /* Sun */
#else
  #define MAP_OPTIONS MAP_FILE|MAP_PRIVATE      /* Linux */
#endif
#endif
#ifndef MAX_IMAGE_WIDTH
 #define MAX_IMAGE_WIDTH  1288
 #define MAX_IMAGE_HEIGHT 1032
#endif

//#define MD(x) fprintf(stderr,"%s:%d:",__FILE__,__LINE__);x
#define MD(x)

struct pixel_buffers {
  int                     data_fd;      // frame read pseudo-file file descriptor
  unsigned char   rgb[MAX_IMAGE_WIDTH*3];       // r-g-b-r-g-b... bayer-decoded data
  int                     imageWidth;
  int                     imageHeight;
  unsigned char * this; // pointer to current line of 8-bit data (to decoded data or DMA line (if 8-bit)
  unsigned char * prev; // pointer to previous line
  unsigned char * next;
  int                     depth;        //  only 8/not 8 (16) bits/pixel
  int                     shft;         //      0-5 - software "gain"
  int                     color;        // 0 -mono, 1 - rgb, 2 - pseudo color
  unsigned long   BayerRows[3][( MAX_IMAGE_WIDTH >> 2) +4];      // not used in 8-bit, 0-shift mode
  int                     BayerOrient; // pixel at 0/0: 0 - R, 1 G(R), 2 - G(B), 3 - B
  int                     bufferedRows[3]; // row numbers currently available in BayerRows[0], [1] and [2]
// sequence changed to match bmp files (b-g-r-0)
//    unsigned long   palette[256]; // lsb -r, next - g, next - b
  unsigned long   palette[256]; // lsb -b, next - g, next - r
};

// <0 - error, 0 - OK
int initPixelBuffers(struct pixel_buffers * pbp,
                                        const char * dmaFileName,
                                        int     width,
                                        int height,
                                        int contrast,
                                        int colorMode,  // 0- b/w, 1 - color
                                        int bayer,      // 0..3 color under 0:0
                                        int     pixelDepth,             // 10,8,4
                                        const char * pseudo
                                        );
void closePixelBuffers(struct pixel_buffers * pbp);     // just close data_fd;
                                         
// in color mode will not return rows 0 and last, will start at second pixel in each row 
unsigned char * getPixelRow(struct pixel_buffers * pbp,int row);        //returns pointer to row data (mono or color depending on mode)
unsigned char * getMonoRow (struct pixel_buffers * pbp, int row, int bufn);
// sequence changed to match bmp files (b-g-r-0)
unsigned long * getPalette (struct pixel_buffers * pbp); // will return NULL if not defined

---